Apple just announced that it will be sunsetting the Back to My Mac
service when macOS 10.14 Mojave launches this fall. The company
recommends to start using iCloud Drive, use screen sharing or to
buy Apple Remote Desktop at $80.

Screens (iOS and Mac) and Screens Connect are a great alternative
to Back to My Mac. In fact, Screens Connect essentially behaves
like the soon to be defunct service; it manages to open a port on
your router and sends that information to our server. Then,
Screens retrieves that information in order to connect to your Mac
remotely.

Their sibling Screens Express app is a great solution to the problem of remote troubleshooting for family members. They’re running a discount offer on the heels of Apple’s announcement.